shift channels 中文意思是什麼
shift channels
解釋
轉換通道-
Elevation of intracellular calcium ions may be partly induced by increased influx through sarcolemma l type - calcium channels. intracellular calcium elevation, on one hand, would activate calpain, a calcium - dependent cysteine protease that degrade the myofibrillar proteins and cause muscle atrophy ; on the other hand, result in activation of calcineurin which enhance the activity of mhc i promoter and inhibit a shift of mhc isoforms from slow to fast in soleus
這樣，可能使得萎縮比目魚肌細胞內鈣離子水平升高，細胞內鈣離子靜息濃度的增加一方面激活calpain ，增加收縮蛋白的降解，使肌肉萎縮；草四軍醫大月卜祠成士學位論文另一方面通過激活鈣調神經磷酸酶，增加快型mhc基因的表達，使骨骼肌肌球蛋白重鏈（ mhc ）發生由慢型向快型的轉化。 -
After 50 nmol / l hntx - iv treatment for 5 min, the peptide didn " t effect the active and inactive time course of sodium currents and the steady - state activation of sodium channels, but it caused a 10. 1 mv hyperpolarizing shift in the voltage midpoint of steady - state sodium channel inactivation on drg neurons
細胞5分鐘后， ttx一s鈉電流的激活與失活相以及通道穩態激活特徵均無明顯改變，但ttx一s鈉通道能引起鈉通道的半穩態失活電壓有約10 . lmv的超極化漂移。 100二。 -
Similar to hntx - iv, 100 nmol / l hntx - v did n ' t effect the active and inactive kinetics of currents and did n ' t have the effect on the active threshold of sodium channels and the voltage of peak inward currents. however, 100 nmol / l hntx - v caused a 7. 7 mv hyperpolarizing shift in the voltage midpoint of steady - state sodium channel inactivation
1 / liintx一v也不影響ttx一s鈉電流的激活相和失活相，對鈉通道的激活閩值和最大激活電壓也無明顯改變，但能引起鈉通道的半穩態失活電壓有7 -
You can watch digital tv channels, shift channels freely via the remote control and epg menu, enjoying life tv with high quality
多款直播頻道的節目，讓你隨時隨心暢游大千世界。通過遙控器和電子節目菜單（ epg ）方便地進行頻道選擇，觀賞高畫質的直播內容。 -
Error loading shift channels
加載位移通道錯誤 -
In this paper, bit - error rate performance analyses are presented for coded and un - coded frequency hopping m - ary frequency - shift keyed systems under the condition of additive white gaussian noise ( awgn ) and partial band noise jamming and multitone jamming. the use of error - correct codes provide a way to improve the performance of frequency hopping system, particularly the use of reed - solomon code in a fh system under the condition of partial band noise jamming can greatly improve the performance of system. so we provide the way of coding and decoding of rs code in c language. in the end, we offer the simulation of the performance of time diversity fh / 2fsk system over partial band jamming noise channels
第一章為緒論，敘述跳頻通信的發展趨勢，以及基本概念，第二章及第三章介紹提高抗部分頻帶干擾的前向糾錯碼reed - solomon碼的原理和實現方法。第四章研究跳頻通信系統在各種干擾條件下的性能。最後在第五章以fh mfsk系統為例，探討在部分頻帶干擾下的系統性能，並進行計算機模擬，模擬結果表明採用分集技術和各種編碼技術對于系統的性能改善具有明顯的效果。 -
Error saving shift channels
保存位移通道錯誤 -
This thesis adopts 8psk / qpsk modulation mode that ' s widely applied in short - wave communication to research all - digital blind receiver in burst mode based on software radio technology. then related solutions are given for the doppler frequency shift problem and multiple fading problem in short - wave channels. the arrangement of the thesis is below : chapter 1 gives brief description for the new technology and new systems of short - wave communication and for the development and appliance of software radio
本文採用短波通信中應用廣泛的8psk qpsk調制方式，研究基於軟體無線電技術的突發模式全數字盲接收機，並對多音并行及慢速傳輸中存在的多譜勒大頻偏問題、單音串列、高速數傳時在短波通信鏈路中發生的干涉衰落問題做了研究，提出了相應的解決方案。 -
Space - time block codes ( stbc ) based on orthogonal design has attracts enough attentions in its applications in mimo - ofdm systems for its full diversity exploiting and low coding / decoding complexity. these applications include not only system performance improvement, but also reduction of the peak to average power ratio in mimo - ofdm systems. under these backgrounds, this paper first studies space - time block codes under the single carrier, flat fading situation, discusses the encoding / decoding principle and its performance under different channels. then, the author focused on the performance of space - time codes under time selective and frequency selective channels, uncovered the fundamental cause of how maximum doppler shift and power delay profile influences the performance of space - time codes through deduction and simulation
在上述背景下，本文以單載波，平坦衰落通道下的空時分組碼為切入點，深入分析了其編譯碼原理和在不同通道情況下的性能;以此為基礎，後文展開了對空時分組碼在多載波，時間選擇性和頻率選擇性衰落通道下的性能研究，通過理論推導和充分的模擬，揭示了空時/頻分組碼在時頻選擇性衰落通道中的性能變化的根本原因;在以上對多載波系統中空時分組碼的研究的過程中，作者發現了空時分組碼在降低系統峰平比方面應用的可行性，提出了一種降低峰平比的新方法。 -
Multi - path fading and doppler shift of wireless mobile channels would generate interference to signals, as a result, waveform of the received signal would be distorted, and channels would be interrupted if the interference is severe
無線移動通道的多徑衰落和多普勒頻移會對信號產生干擾，導致接收信號波形失真，嚴重者會造成通信的中斷。 -
Doppler shift characterization for non - geo satellite channels
移動通信系統中的最大多普勒頻移估計 -
Agrawal ' s theory model of soa ca n ' t simulate accurately the amplified signal pulse shape in soa when the pulse width is as short as several picosecond. so we simulate accurately the peak power, full width half maximum, rising time and falling time of amplified pulse after considering the gain compression, gain asymmetry, gain shift, gain variable with situation and time. with ultrahigh velocity dense wavelength division multiplexing ( dwdm ) and optical time division multiplexing ( otdm ) developing, we demand more and more short signal pulse and more signal channels
但當信號脈沖的寬度只有幾個皮秒時， soa傳統的agrawal理論模型已經不能完全準確地模擬soa對信號脈沖的放大情況，在此基礎上，我們在全面考慮soa的增益壓縮、增益非對稱和漂移、增益隨位置和時間變化的載流子壽命等物理機制的情況下，對皮秒超短高斯信號光脈沖經soa放大后的脈沖的峰值功率、脈沖半值全寬度、脈沖的上升時間和下降時間等重要物理參量進行了準確模擬和詳細研究。
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